Finding the Difference: Subtraction on a Number Line

The video tutorial explains how subtraction can be understood as finding the distance between two numbers on a number line. It starts with simple examples and progresses to larger numbers, demonstrating how to use friendly numbers to simplify calculations. The technique is then applied to a real-world problem involving the production of Oreos and Ritz crackers, illustrating how to find the difference using a number line approach.

What is the difference between two numbers on a number line?

How can you find the difference when subtracting larger numbers?

Explain how to use friendly numbers to simplify subtraction.

What steps did the teacher take to solve the problem of how many more tons of Oreos are produced than Ritz crackers?

How did the teacher arrive at the final answer of 317 tons?